Well the first thing you need to know is that you need to have Sonic Adventure 2: Battle to have these Chao! Second is that these are all copyright Tikal's Chao Garden! Third is this is just for FUN not BUISNESS!

The Black and White Hero Chao

Well first you need to have a Golden Chao Egg. Get the Chao and raise it as a hero but NEVER EVER leave the garden. Give it NO animals and NO Chaos Drives. Just pet it and feed it cocoanuts. When it evolves, it will be a black and white hero! This also works with the Dreamcast version